The Guard,mechanical Drive, cataloged under National Stock Number 3020-01-331-0619, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-331-0619 |
| Primary Part Number | 1127742 |
| Item Name | Guard,mechanical Drive |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 315494 FIND 31 | Lake Shore Systems, Inc. (USA) |
| 1127742 PRIMARY | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 315494 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 3020-01-331-0619 is a Guard,mechanical Drive, manufactured by Lake Shore Systems, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-331-0619 has 2 manufacturer part numbers on file: 315494 FIND 31 (Lake Shore Systems, Inc.), 1127742 (Lake Shore Systems, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-331-0727, 3040-01-331-0730, 5325-01-465-7836. Verify interchangeability with system specifications before substitution.
Key specifications for 1127742: Material: STEEL. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.